Martin Luther's Letters

English Resources:

Luther's Correspondence and Other Contemporary Letters Vol 1 By Martin Luther, Preserved Smith, Charles Michael Jacobs Published by Lutheran Publication Society, 1913

Luther's correspondence and other contemporary letters Vol 2 By Martin Luther, Preserved Smith, Charles Michael Jacobs Published by Lutheran Publication Society, 1918 Item notes: v. 2

The Life and Letters of Martin Luther (Preserved Smith)

The letters of Martin Luther (Margaret Currie, editor), 1908.  alternate web page link.

Luther's Letters to Women - Martin Luther, Karl Zimmermann, Georgiana Malcolm

Luther: Letters of Spiritual Counsel (Theodore G. Tappert, editor); PDF.

Original Languages: Abteilung 4 Briefwechsel

Sämtliche Schriften. Herausgegeben von Johann Georg Walch. Halle, 1740-1753 (W1)

21 Dr. Martin Luthers Briefe

Johann Georg Walch - Dr. Martin Luthers Sämmtliche Schriften; St. Louis, 1880-1910 (W2) 

21-1 Dr. Martin Luthers Briefe Teil 1 von 1507 bis 1532

21-2 Dr. Martin Luthers Briefe Teil 2 von 1533 bis 1546

Walch (W2) A.I. Generated English Translation

Volume 21a: Dr. Luther's Letters (part one)

Volume 21b: Dr. Luther's Letters (part two)